Tech Lead – Ruby or Data Science

• Web Development & Platform Building – You help digitize our customer journey in the energy consulting sector by developing a self-service platform and finding solutions to make energy consulting more efficient through automation and optimization. Your efforts contribute to customer-centric products which help achieving our goals.
• Software Engineering & Quality Assurance – You deliver high quality software that is well tested and conforms to security and performance standards. Additionally, you use our automated CI/CD pipelines for efficient and reliable deployments.

• Data Processing & Model Development– You prepare internal data, create clean datasets for ML applications, and develop as well as optimize ML models and numerical simulations to enhance the quality and efficiency of energy consulting for our customers.
• Benchmarking & Innovation – You evaluate the performance of your models, ensure they meet our high standards, and incorporate new approaches from the latest AI developments to continuously improve our data products.

• Teamwork & Initiative – You work in a cross-functional team of 7 (engineering, data, product design, product management) and actively participate in code reviews as well as product discussions to find the best solutions. You support the product team during customer/product research with your technical expertise.
• Leadership & Mentoring – Support the team’s growth through mentoring, 1-1s, and career development. Ensure team performance, happiness, and goal achievement while providing clear direction and fostering collaboration.

Your profile

With Engineering Background:

• Technical Expertise – You have solid experience in setting up web applications with Ruby on Rails in an agile environment and are passionate about the latest approaches, including GraphQL integration, containerization, security enhancements, and the integration of modern front-end frameworks.
• Architecture Understanding & Best Practices – You're right at home with software components and interactions, as well as modern web/cloud development and testing methods. Plus, you're experienced with monitoring and logging systems like Prometheus, Grafana and OpenTelemetry.

• Technical Expertise & Ingenuity – You have excellent Python skills, a strong understanding of common machine learning algorithms, computational geometry, cloud computing, and the ML software stack, combined with a creative and innovative mindset to tackle challenges and develop effective solutions.

• Team Leadership – At least initial experience in leading smaller development teams, including mentoring team members and contributing to technical decision-making.
• Strong Communication Skills – Excellent ability to coordinate and communicate effectively with both technical and non-technical stakeholders, ensuring alignment and transparency.

We take our responsibility for a green future seriously and aim to make a significant contribution to CO2 reduction through our commitment to energy efficiency. We are ambitious and constantly strive to improve. That’s why we give people the space to grow and take responsibility, and the support they need. We are digital, innovative, customer focused and highly motivated to achieve great things with you. We are a real team and support each other, speak our minds, have fun together and have a genuine desire to make a positive difference. We understand the importance of in-person interactions versus virtual ones, which is why we have thoughtfully designed our office in Berlin and focus on team events. At the same time, we place a high value on flexibility, allowing our team to work from home two days a week.

Now is the time to take action and fight the climate crisis. We want to support as many homeowners as possible to make their homes energy efficient and receive the best possible funding.

Residential homes are responsible for a significant percentage of global CO2 emissions and the pressure from high energy costs is higher than ever, but the path to a climate-neutral home with optimal funding is complicated. We combine expertise in the energy and buildings sector with practical project support and digital innovation, helping people and the environment in equal measures.